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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 810 · 40 questions
TalentJR

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

NameDateTime takenScore ___ / 40
  1. 1.27 + 9 =
  2. 2.236 ÷ 4 =
  3. 3.224 ÷ 4 =
  4. 4.207 + 99 =
  5. 5.57 + 87 =
  6. 6.69 + 15 =
  7. 7.You buy a storybook for ₹23 and pay with a ₹100 note. How much change do you get, in rupees?
  8. 8.89 + ? = 100
  9. 9.88 + 4 =
  10. 10.5% of ₹800 =
  11. 11.8 + 7 =
  12. 12.184 ÷ 4 =
  13. 13.669 + 99 =
  14. 14.103 − 82 =
  15. 15.Best estimate of 147 + 504? (a) 800 (b) 400 (c) 600
  16. 16.Half of 180 =
  17. 17.31 × 4 =
  18. 18.What is the remainder when 76 is divided by 9?
  19. 19.27 + 4 =
  20. 20.12 + 14 =
  21. 21.304 ÷ 8 =
  22. 22.79 + ? = 100
  23. 23.52 − 44 =
  24. 24.258 ÷ 3 =
  25. 25.You buy a bag of mangoes for ₹42 and pay with a ₹100 note. How much change do you get, in rupees?
  26. 26.You buy a notebook for ₹88 and pay with a ₹100 note. How much change do you get, in rupees?
  27. 27.Half of 42 =
  28. 28.68 × 5 =
  29. 29.266 ÷ 7 =
  30. 30.Half of 134 =
  31. 31.59 × 5 =
  32. 32.63 + ? = 100
  33. 33.13 × 4 =
  34. 34.93 ÷ 3 =
  35. 35.51 × 4 =
  36. 36.240 ÷ 4 =
  37. 37.A train leaves at 1:00 and reaches the next city at 2:35. How many minutes is the journey?
  38. 38.9 + 6 =
  39. 39.16 + 9 =
  40. 40.39 + 28 =

Answer key

  1. 36
  2. 59
  3. 56
  4. 306
  5. 144
  6. 84
  7. 77
  8. 11
  9. 92
  10. 40
  11. 15
  12. 46
  13. 768
  14. 21
  15. 600
  16. 90
  17. 124
  18. 4
  19. 31
  20. 26
  21. 38
  22. 21
  23. 8
  24. 86
  25. 58
  26. 12
  27. 21
  28. 340
  29. 38
  30. 67
  31. 295
  32. 37
  33. 52
  34. 31
  35. 204
  36. 60
  37. 95
  38. 15
  39. 25
  40. 67

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